Prestress expansion shell anchor head internally provided with resin and using method

By designing a resin-type prestressed shell anchor head, using resin anchoring and deployable anchor head mechanism, the problems of easy corrosion, wear and long construction of traditional anchor rods are solved, and the reliability and applicability of anchoring are improved, and the adaptability is improved. geological conditions.

CN119288572APending Publication Date: 2025-01-10RENQIU LEISHENG ENGINEERING MATERIALS CO LTD
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Patent Information

Application Number
CN202411606192.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-12
Publication Date
2025-01-10

AI Technical Summary

Technical Problem

Traditional anchors are susceptible to corrosion and wear, take a long time to construct, and have a small opening angle when used in weak strata or crack development strata, and have poor applicability.

Method used

Design a resin-type prestressed shell anchor head, including an externally extended hollow casing, a limit anchor head mechanism and an expandable anchor head mechanism, and grouting with the inner extension rotary rod body to form resin anchorage, and increase anchor rod and rock soil The friction and bonding force of the body can be opened at a large angle to adapt to a variety of geological conditions.

Benefits of technology

It significantly improves the anchor reliability and tensile resistance of the anchor rod, shortens the construction period, reduces the construction cost, and is suitable for a variety of geological conditions, including weak strata and large tension conditions.

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Abstract

The invention relates to the technical field of anchor heads, in particular to an internally-arranged resin type prestress expansion shell anchor head and a using method, and the internally-arranged resin type prestress expansion shell anchor head comprises an externally-extended hollow sleeve, a limiting anchor head mechanism, an internally-extended rotating rod body and an expandable anchor head mechanism; a limiting anchor head mechanism is installed at one end of the outer extending hollow sleeve, an inner extending rotating rod body is connected to the inner side of the outer extending hollow sleeve in a threaded mode, and an expandable anchor head mechanism which is used in cooperation with the limiting anchor head mechanism and can be expanded at a large angle is installed at the top end of the outer side of the inner extending rotating rod body. The externally-extended hollow sleeve comprises an anti-skid cambered surface, an overflow hole and a circulation hole; after the anchor rod is installed at a preset position, grouting is conducted from the inner extension rotating rod body, grout flows into the circulation hole of the outer extension hollow sleeve through the grouting hole and permeates into a rock-soil body around the anchor rod, the reinforcing effect is achieved, the expandable anchor head mechanism can be expanded by a large angle through the inner extension rotating rod body, the expandable anchor head mechanism can adapt to various geological conditions, and the expansion effect is good. The conditions include soft stratums and conditions needing to resist large tension.
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